The power source is a 11.1V 2200mAh 25C Lipo . Practically the cells give 11.5-12V. I used a switching buck regulator to step down the voltage. However , when i run my robot on track after few seconds,the arduino tends to reset and run again. This problem typically arises when i drive the motors at higher PWM(above 180 on analogWrite function). Since i use PID, limiting the PWM means i have to drive at lower speeds which i do not want.
I am providing links for the items i used for my circuit:
The sensor array draws 150mA at peak. Any suggestions as to where the problem might lie would be of great help. Thank you .
EDIT 1: Changed the input voltage Vin to 7.9V through the buck converter . The problem still persists .